Western nations, including the US, have recognized Guaido as the rightful interim president of Venezuela. But certain nations like Russia are supporting Maduro.

US National Security Advisor John Bolton believes the tide is turning for Guaido.

"Look, I think momentum is on Guaido's side. Reports in the press that stress the military hasn't shifted missed the point entirely," Bolton told ABC This Week. "The point is that they have not sought to arrest Guaido and the National Assembly and the opposition. And I think one reason for that is that Maduro fears if he gave that order, it would not be obeyed."

Last week, US Secretary of State Mike Pompeo tweeted: "No food. No medicine. Now, no power. Next, no Maduro."